Improvement in combination-padlocks



w. c( LANGENAU.

Combination Pad-Locks.

N0. 144,114, Patented 0ct.28,1873.

Witnesses: "W my Anorneys.

. NITED STATES PATENT OFFICE...

WILLIAM G. LANGENAU, 0E CLEVELAND, OHIO, ASSIGNOR or ONE-HALF HIS RIGHT TO JOHN ADAM LANnEnr, or SAME rLAoE.

IMPROVEMENT IN COMEINATIOWPAFLOCKS.

Specification forming part of Letters Patent No. 144,114, dated October 28, 1873; application filed September 22, 1873.

declare that the following is a full, clear, andexact description of the same, reference being had to the accompanying drawing forming a part of this specification, in which Figure 1 is a plan view. Figs. 2 and 3 are vertical sections. Fig. 4 is a plan view of a modification.

The invention relates to permutationlocks,

and consists in novel and useful means for enabling the combination of numbers to be readily and conveniently changed.

A represents the case, and B the bow, of a padlock having the recess 1), in which is shot a vibratory bolt, C, by the raising of the tumbler D. The latter is elevated as soon as the Y disks E are turned, so as .to throw the projections of the tumbler D out of the notches of the disks. is fastened a spur-wheel, F, which is loose on To each of these notched disks E the same shaft, and turned by a side stud, g, on knob-wheels G G G. These are all old in their combination and mode of operation. The disks and spur-wheels are journaled upon pins projecting from the upper side of a plate, H, which is interposed between the tumbler D and an oscillating plate, K. This plate H has a sliding movement upon the stud L, and is yieldingly held against the oscillating plate K by a spiral spring that encircles the stud L.

When it is desired to change any combination of numbers which has been in use, it is necessary to disconnect the wheels 'E F from the stud-wheels G, so that either or all of them can be freely rotated and changed in the number of spurs or relative distance of the studs from the notches in which the projections of A thespring I, so as to connect the notched disks E F and the stud-wheels, but which, when turned back but a short distance, enter notches h h h in plate H. The spring I then lowers the wheels E F so that the stud g is held out of the spurs of wheel F,when the wheels G may be set at any desired relative position. The plate K It has a central aperture, k, whereby it is fitted upon the stud L, and is also provided with an elongation, k which rests in the throat to of the case. To admit of this position, the bow is recessed in front.

By simply vibrating the plate K, the lock may be placed in condition to allow of any desired change in the combination.

Instead of an oscillating, I may use a reciprocating, plate. In order to do this it is only necessary to elongate the aperture for the stud L, and make the bowels L to run in the same direction as the slot, as shown in Fig. 4.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

The plate K, fitted to move on stud L, having the curved projections is k k, combined with -subjacent plate H having notches h h 71., as and for the purpose described.

WILLIAM CHRISTIAN LANGENAU.

\Vitnesses P. W. PAYNE, 0. It. HELLER. 

